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Author:Adão, Bernardino 

Working Paper
Monetary policy with single instrument feedback rules

We consider a standard cash in advance monetary model with flexible prices or prices set in advance and show that there are interest rate or money supply rules such that equilibria are unique. The existence of these single instrument rules depends on whether the economy has an infinite horizon or an arbitrarily large but finite horizon.
Working Paper Series , Paper WP-04-30

Working Paper
Beliefs, competition, and bank runs

Working Papers , Paper 95-26

Working Paper
Monetary policy with state contingent interest rates

What instruments of monetary policy must be used in order to implement a unique equilibrium? This paper revisits the issues addressed by Sargent and Wallace (1975) on the multiplicity of equilibria when policy is conducted with interest rate rules. We show that the appropriate interest rate instruments under uncertainty are state- contingent interest rates, i.e. the nominal returns on state-contingent nominal assets. A policy that pegs state-contingent nominal interest rates, and sets the initial money supply, implements a unique equilibrium. These results hold whether prices are flexible or ...
Working Paper Series , Paper WP-04-26

Working Paper
Short and long interest rate targets

We show that short and long nominal interest rates are independent monetary policy instruments. The pegging of both helps solving the problem of multiplicity that arises when only short rates are used as the instrument of policy. A peg of the nominal returns on assets of different maturities is equivalent to a peg of state-contingent interest rates. These are the rates that should be targeted in order to implement unique equilibria. At the zero bound, while it is still possible to target state-contingent interest rates, that is no longer equivalent to the target of the term structure.
Working Papers , Paper 680

Working Paper
Gaps and triangles

In this paper, we derive principles of optimal cyclical monetary policy in an economy without capital, with a cash-in-advance restriction on household transactions, and with monopolistic firms that set prices one period in advance. The only distortionary policy instruments are the nominal interest rate and the money supply. In this environment, it is feasible to undo both the cash in advance and the price setting restrictions, but not the monopolistic competition distortion. We show that it is optimal to follow the Friedman rule, and thus offset the cash-in-advance restriction.
Working Paper Series , Paper WP-01-13

Working Paper
Renewable Technology Adoption Costs and Economic Growth

We develop a dynamic general equilibrium integrated assessment model that incorporates costs due to new technology adoption in renewable energy as well as externalities associated with carbon emissions and renewable technology spillovers. We use world economy data to calibrate our model and investigate the effects of the technology adoption channel on renewable energy adoption and on the optimal energy transition. Our calibrated model implies several interesting connections between technology adoption costs, the two externalities, policy, and welfare. We investigate the relative effectiveness ...
Finance and Economics Discussion Series , Paper 2022-045

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